Web control for printing presses



April M, 1936. TORNBER'G WEB CONTROL FOR PRINTING PRESSES Filed Nov. 18,1932 2 Sheets-Sheet 1 rber 4 @y mrPMyJ 7 far Canam.

April 14, 1936. l. TORNBRG WEB CONTROL FORv PRINTING PRESSES Filed Nov.18, 1952 2 sheets-sheetl 2 f (QM fol-ww Patented Apr. 14, 1936 Y PATENTOFFICE WEB CONTROL FOR PRINTING PRESSES sidor Tornberg, Plainfield, N.J., assignor `to Wood Newspaper Machinery Corporation, New York', N. Y.,a corporation of Virginia Application NovemberlS, 1932, Serial No.643,194

4 Claims.

This is an improvement on my prior application for patent, Serial'vNo..264,'2`48, filed March 23, 1928.

The principal objects of this invention are to provide a-vcombinationl"of a variable speed device for regulating the tension of a running webwith means for clutching the tensioning device to the press to run atweb speed for bringing the web roll up to web speed preparatory tosplicing; and to provide means for varying the speed of the controldevice and the tension of the web, either by hand or automatically, bythe slackness or tautness of the web.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 isan end view of a reel for carrying the web rolls, showing the rollcontrolling belt in two positions;

Fig. 2 is a plan of the same, and

Fig. 3 is a sectional view on the line 3-3 of Fig. 2.

Heretofore tension on the web of a printing press has been suppliedeither by belts running in the same direction as the paper or bystationary straps. In the case of the former the only available tensionis the slight difference in speed which is generally provided forbetween the belts and the paper, requiring extremely heavy belt arms andat least two or three belts of considerable width to produce the properamount of tension.

The invention is shown as applied to a well known type of reel I havinga fresh roll B, about to be pasted and bearings for a third roll, in theusual way, although it is capable of being used with other types ofreels. This reel is adapted to be operated by a motor.

The web passes from the running roll over a guiding roller 2a and thenceover a tension ro-ll 2, guiding roller 3, fioating roller 4 and guidingroller 5 into the press. The tension roll 2 is springpressed in anydesired way.

It will be understood that the leading end of the web on the fresh rollB has been temporarily fastened to the surface of the roll by means ofgrease, while the outer surface of the edge has the usual splicingpoints, not shown. AThese are properly placed thereon in a manner nowwell known preparatory to attaching it to the web W coming from theexpiring roll.

It is necessary to control the rotation of the roll B on its axis. Forthis purpose I provide a friction device, preferably in the form of oneor more belts 6 arranged in a caterpillar tread form.: The details of?this belt are not shown or described. here indetail as the details of itare not a 'feature of this invention but have been claimed in?. my priorapplication, Serial No. Z`5 131,524, filed August 24, 1926. rIt israised and lowered by a handle ISU.

The belt 6 is driven by suitable chains from a driving shaft l which isprovided with a double faced clutch 8 on the opposite sides of which arel0 freely mounted two chain sprockets 9 and I0. The part that is calledthe clutch is slidably keyed on the shaft I and operated by a lever I3,part of which constitutes a yoke for operating this clutch.

The sprocket wheel or pulley I 0 is connected by means of a suitablechain I I toa driving shaft I2, which it will be understood, is sogeared to the press as to drive the roll B in the same direction as thatof the web and at the 20 same surface speedI so that the splice may bemade. It will be obvious that the pulling of the handle I3 down asindicated in Fig. 3 throws the clutch 8 into contact with the clutch onthe sprocket I Il. This connects the belt 6 with the 25 press and runsthe belt in a forward direction. After the splice, however, by throwingthe handle I3 upwardly, clutch 8 is thereby connected with the sprocketor pulley 9, which in turn is connected with the motor 2T. The motor 2lmay 30 then be run so that the belts 8 travel in the same direction at aslower speed and thereby give the desired tension.

Current is supplied to the motor 21 through suitable adjustableresistances 29 which may be 35 controlled either manually or by theposition of the tension roller 4 which is carried in arms 28 to whichthe controlling resistance 29 is attached. Thus the speed of the motor21, and therefore the tension on the web, may be va- 40 ried either atwill or automatically by the slackness or tautness of the web asdetermined by the position of the roller 4.

The rotation of the reel in the position shown in Fig. 1 is` controlledby push buttons not shown. 45 A splicing member, as a brush 22, isforced into the dotted position shown in Fig. 1 carrying the web W withit and causing the pasted points of the roll to adhere thereto, therebyattaching the new roll to the expiring web.

Although I have illustrated and described only one form of the inventionI am aware of the fact that modifications can be made therein by anyperson skilled in the art without departing from the scope of theinvention as expressed in the 55 claims. Therefore, I do not wish to belimited in these respects but what I do claim is:-

1. In a printing press, the combination With a support for a web roll,of a shaft constituting a part of the press and operated thereby, asecond shaft, a pulley free on the second shaft driven from the rstnamed shaft, said pulley having a clutch section, and a clutch on thesecond shaft adapted to connect the pulley therewith to run the secondshaft, friction means adapted to engage the surface of the running rollsupplying the running web to the press, means for running said frictionmeans from the second shaft to drive the roll at web speed for splicing,said clutch having teeth on both sides, a second pulley on the shafthaving teeth adapted to be engaged by the opposite teeth on the clutchto connect that pulley with the shaft, and a motor for operating thesecond pulley and turning the shaft to run the friction means moreslowly than the web roll to 'apply tension.

2. In a printing press, the combination with means for rotatablysupporting a web supply roll, a shaft, means for running the shaft fromthe press, a friction device for engaging the surface of the roll, meansfor connecting said shaft with the friction device to run the latterforward, a motor, and means for connecting the motor with the shaft forrunning the friction device slowly to apply tension to the running web.

3. In a printing press, the combination with means for effecting asplice, of press-driven means comprising a power transmitting member forbringing the fresh roll up to web speed, a motor for controlling webtension, and means for disconnecting the press-driven means from saidpower transmitting member and connecting the motor with the powertransmitting member for the purpose described.

4. In a Web-splicing device, the combination of press-driven meanscomprising a belt for bringing the fresh roll up substantially to webspeed, means for effecting the splice, a motor adapted to be connectedwith the belt for controlling web tension, and means for disconnectingthe pressdriven means from the belt after the splice is made andconnecting the motor with the belt for controlling tension of the webfrom the new running roll. y

vISIDOR TORNBERG.

